Currently memory shared to QRTR is not mapped with IOMMU_CACHE
flag. When using iommu_map_sg, IOMMU_CACHE flag makes the memory
coherent. Add IOMMU_CACHE flag to iommu_mag_sg to make memory
shared to QRTR coherent on APPS. Also remove DMA_ATTR_NO_KERNEL_MAPPING
attribute while allocating memory as it doesn't have significance when
the memory is coherent.
Signed-off-by: Himateja Reddy <quic_hmreddy@quicinc.com>
6b8c6087fe